Arnab Chakraborty has Published 76 Answers

Write a python program to count total bits in a number?

Python Server Side Programming Programming

Arnab Chakraborty

Published on 25-Sep-2018 17:40:24

Exampledef bitsCount(n): count = 0 while (n>0): count += 1 n >>= 1 return count i = 4 print(bitsCount(i))Output3

How can I remove all child elements of a DOM node in JavaScript?

Javascript Web Development Front End Technology

Arnab Chakraborty

Published on 23-Sep-2018 11:45:06

To remove the child elements of <div>we can use, var list = document.getElementById("mList"); while (list.hasChildNodes()) { list.removeChild(list.firstChild); } }It will remove the all child ofwhich id is 'mList'.ExampleIn your code it can be written as -<html> <body> <div id="mList" style="width:400px;background-color:gray"> ... Read More

How to validate a form using jQuery?

Arnab Chakraborty

Published on 22-Sep-2018 13:49:12

At first you have to make a html form like.<html> <body> <h2>Validation of a form</h2> <form id="form" method="post" action=""> First name:<br> <input type="text" name="firstname" value="john"> <br> Last name:<br> <input type="text" name="lastname" value="Doe"> <br> Email:<br> <input type="email" name="u_email" value="johndoe@gmail.com"> <br> <br><br> <input type="submit" value="Submit"> </form> </body> </html>Now use jQuery validation plugin ... Read More

What e.preventDefault() method really does in jQuery?

jQuery Web Development Front End Technology

Arnab Chakraborty

Published on 17-Sep-2018 18:38:53

The preventDefault() method stops the default action of a selected element from happening by a user. This method does not accept any parameter and works in two ways:It prevents a link from following the URL so that the browser can't go another page.It prevents a submit button from submitting a ... Read More

How can I know which radio button is selected via jQuery?

jQuery Web Development Front End Technology

Arnab Chakraborty

Published on 17-Sep-2018 14:19:44

The jQuery: checked selector can be used in conjugation with the val() to find the value of certain radio button as, $('input[name=radioName]:checked').val()In your query this can be implemented as −Example Live Demo<html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function() { $("input[type='button']").click(function() { ... Read More

How to remove a property from a JavaScript object

Javascript Web Development Front End Technology

Arnab Chakraborty

Published on 10-Sep-2018 13:33:44

The delete keyword is used to remove the property and also the value of the property. After deletion, the property cannot be used before it is added back again.In your example it can be used as -Example<html> <body> <p id="demo"></p> <script> var cricketer = { name:"John", rank:3, ... Read More

How do we do computer output formatting using the <samp> tag in HTML?

HTML Web Development Front End Technology

Arnab Chakraborty

Published on 05-Sep-2018 00:23:35

<samp> tag is a phrase tag.It is used to identify the sample output from a computer program. Most browsers will display the <samp> element in monotype font.This tag can be used in html document as −Example<html> <head> <title>Title of the document</title> </head> <body> <samp> <h2> HTML document</h2> <p>This ... Read More

How to use the <kbd> tag for keyboard input formatting in HTML?

HTML Web Development Front End Technology

Arnab Chakraborty

Published on 04-Sep-2018 01:17:17

<kbd> tag is a phrase tag.It is used to identify text that represents user keyboard input. Most browsers display the <kbd> element in a monospace font.This tag can be used in html document as:<html> <body> <p>Two special keys in keyboard are:<kbd>ctrl</kbd>, <kbd>alt</kbd>.</p> </body> </html>Read More

How to make a div center align in HTML?

HTML Web Development Front End Technology

Arnab Chakraborty

Published on 04-Sep-2018 00:35:53

To center div element center ,you can use "div style="text-align:center" " and to center the div ,use "div style="margin: 0 auto" "In your code, the above css will be written as −<div style="text-align:center;width: 300px;margin: 0 auto;border-style: dotted;"> <p>hi</p> </div>Read More

How do I use jQuery effects?

jQuery Web Development Front End Technology

Arnab Chakraborty

Published on 17-Aug-2018 01:51:42

For hiding and showing the div, you can use hide and show method.For hiding$('#id1').hide();For showing$('#id1').show();Example<html > <head> <title>showhide</title> <script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function () { $('#btn1').click(function () { $('#id1').hide(); ... Read More